Mutize,Chido Natasha- Geography 265 Assg 3.docx

Mutize,Chido Natasha- Geography 265 Assg 3.docx - Natasha...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Natasha Mutize Geography 265 Assignment 3 Part One 1. The highest values for insolation received at the Earth’s surface occur over the continents between 25° and 30° north and south latitude, although the greatest amount of solar radiation reaching the top of the atmosphere is at the equator. What is the reason for this difference? [5 marks]. It is because the earth’s thermopause intercepts with insolation. The curvature of the earth and angles of insolation determine the amount of energy received at a latitude. Lower latitudes receive or concentrated energy due incoming solar rays at a 90° angle. The higher latitudes receives slanting rays and diffused energy. Also, lower angle rays towards the poles must pass through a greater thickness of atmosphere which results in ore energy loss due o scattering, absorption and reflection. 2. The mean albedo value for latitudes 10°–20°S is less than that for latitudes 10°–20°N. Suggest a reason for this distribution. [5 marks] Albedo is highly susceptible to the reflection of surface shapes on the earth at different geographical locations. Fresh water snow ,cloud cover, surfaces( smooth or tough), cloud and ground cover can either decrease or increase albedo. In visible wavelengths darker colors have lower albedo and lighter colors have high albedo. Depending on the factors mentioned above the albedos value for 10°-20°S an be less than that for latitude 10°-20°N. 3. Explain why the South Polar Region has a much greater annual mean albedo than the North Polar Region. [5 marks It is because the land mass in the Antarctica is constantly filled with snow, which is highly reflective therefore, high albedo. The land mass containing snow is larger than the sea ice of the North pole. The Antarctica is increasing unlike the North pole whose ice bed is decreasing due to factors as climate change. Antarctica lies a lower latitude of 65° S compared to the Arctic , 75° 80°N, causing a greater albedo effect.
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern